Rca video noise reduction12/7/2023 ![]() In a system where improvement of the signal-to-noise ratio for a wideband video signal is effected by subtraction therefrom of a signal which follows low-amplitude excursions, within selected close-to-axis limits, of the video signal\s high frequency component, means are provided for varying the selected close-to-axis limits in response to variations in the level of noise accompanying the video signal.
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